Have come across and interesting situation and am wondering if others have run across it as well.
We have enabled passthru with sso in our test environment and have been testing. When accessing share site with Internet Explorer 8, it will work 70% of the time without issue. However periodically images will be xed out or a windwo will pop up asking for a password. Image heavy pages seem to have issues more often than others. Usually refreshing the page will get everything working fine.
I am seeing much less of this with google chrome. SSO works 99% of the time.
I have messed around with IE settings but with little effect. Any thoughts?